Weird semi-transparent lines and rectangles problem in Blender Internal Render (2.79)
Seems like problem comes from &quot;Light&quot; texture, it uses gradient to darken some shadeless materials and somehow final result has stripe artifacts.
After playing with the settings, I've found two ways to prevent it (still don't know why is it even happen):

Decrease &quot;Light&quot; texture's Filter size



Enable Autosmooth on the ground object:


P.S. didn't test it on other camera angles, problem might appear again.